Update
I went with the 5.11 Select Carry Pistol Pouch. My Ruger LCR now accompanies me on long bike rides primarily for unchained doggie defense. So far, the 5.11 is light, well padded, comfortable and does not loosen, rotate, or rub raw while pedaling. But, it is small and leaves no extra room for a phone, wallet, keys, etc. Practice drawing with one hand, even while not on the bike, is slow and fumbling but that is a flaw with all fanny pack holsters. I chose black instead of a touristy color scheme so that, I assume, the "Guy with a gun" appearance is not as obvious. It probably looks like I have a wallet, keys and phone.
Thank you all for your responses and suggestions.